Please reply if you have tried this travel pratice lately (or personally know someone who has) and have either been caught or got away with it. I am debating attempting it on Delta. Note that this pratice does constitute a breach of Delta's contract of carriage.

This is my (quick) story. As I do not travel for business, I travel infrequently (5-15k miles/yr). The majority of my flights are MSP-DTW (2 Delta hub cities). Prices are high. However, if I perform point-beyond ticketing and travel

DAY 1 - MSP to DTW, DTW to CHI (any airport)
DAY 3 - DTW to MSP, MSP to CHI (any airport)

The price is less than 50% of the direct flight. So will I be able to get away with this? Or, when I miss the Day 1 DTW to CHI flight, will all my flights on Day 3 be cancelled?
It's pretty obvious from my itinerary I am point-beyond ticketing. But does anyone have first or second hand knowledge of someone actually being caught or getting away with it? Thanks all!